جستجوی مقالات مرتبط با کلیدواژه « برتری جانبی » در نشریات گروه « پزشکی »

 There is a high correlation between depression and anxiety in children which are also related to laterality. This study aimed to compare generalized anxiety and social anxiety in sinistral and dextral children with depression symptoms. 

 This is a cross-sectional study with a causal-comparative design. The study population consisted of all primary students (fourth to sixth grade) of Arak Province in Iran. A convenience sampling method was used to select study samples. Prior to study, following questionnaires were completed: Children's Depression Inventory, Brief Scale of Generalized Anxiety Disorder, and Liebowitz Social Anxiety Scale for Children and Adolescents. Then, those with depression score of 19 and higher were assigned into two groups of sinistral (n=31) and dextral (n=35), and compared in terms of generalized anxiety and social anxiety.

 This study obtained its ethical approval form the Research Ethics Committee of Arak University of Medical Sciences (code: IR.ARAKMU.REC.1397.298). 

 The results of multivariate analysis of variance showed a significant difference in two study varia-bles between groups (P=0.001). Moreover, based on the results of univariate analysis of variance, sinistral children had higher generalized anxiety compared to dextral children; however, they were not significantly different in terms of social anxiety.

 Considering the higher vulnerability of depressed sinistral children to anxiety disorders, they are more likely to need specific ways of preventing and treating depression and generalized anxiety disorder.

The purpose of this study was to compare laterality in the asymmetric transfer of strength and velocity in children with 11 to 13 years of age. In this semi-empirical study، 28 students (mean age، 11. 6 ± 0. 62 years)، who were recruited from junior high schools of Kashmar، Iran، were divided into two groups of 14 each. One group practiced strength training with the right hand and speed training with the left hand and in another group the usage of hands were reversed، meaning that strength training was practiced with the left hand and speed training with the right one. Participants had practiced for 3 sessionsaweek over a 4-weekperiod. The results of one-way ANOVA showed that there was significant difference in magnitude of strength transfer between the two groups. The magnitude of strength transfer from the left hand to right one was significantly greater than the vise versa (P = 0. 029). However in “Velocity” variable، there was no significant difference. According to results of this study and specialization of right hemisphere in control of strength، it seems that the magnitude of strength transfer from left hand to right hand is greater than the opposite direction.

Stuttering is a prevalent communication disorder among children and adolescents. The purpose of this study was to compare the motor speed and lateralization skills of children and adolescents with developmental stuttering with those of their normal counterparts.

In a cross- sectional study, 30 students with developmental stuttering and 30 normal students were recruited from elementary and middle schools of Shahriyar through convenience sampling. A speech-language pathologist confirmed the diagnosis of developmental stuttering in affected subjects. Each group consisted of 26 boys and 4 girls whose average age was 12 years. Finger tapping task as a neuropsychologic test was used for the evaluation. Data were statistically analyzed via dependent and independent t tests using the SPSS statistic software (version 18).

Results showed that there was significant difference between two groups regarding motor speed (P = 0.0001), but, lateralization had a similar pattern in both groups (P = 0.35). Motor speed of the right hand, which is related to the left hemisphere, has a significant predominance to that of the left hand, which is related to the right hemisphere, in both groups. Therefore, the left hemisphere is predominance hemisphere in both groups.

When the production of language is impaired, difficulties are also apparent in motor abilities. In clinical assessment and intervention for stuttering groups should be attended to target motor ability deficits and language impairments simultaneously. It is also possible that atypical lateralization may be the consequence of this disorder rather than being part of its etiology.